StandardFirmata, arduino, SSR and physical switch

Configuration
1

Hi,

I’ve:

  • installed hassio on Raspberry Pi 3B

  • installed StandardFirmata on arduino Mega

  • connected SSR to Arduino

  • added config:

     arduino:                                                
port: /dev/ttyACM0

    switch:
    platform: arduino
    pins:
    4:
    name: bimki

I can change state from hassio webpage - works fine.

Now I’d like to add physical doorbell switch to my solution. How to do it? Do I need to install something else on arduino than StandardFirmata ?

2

maybe I should not use StandardFirmata in this case?